1.124. tabledropkey( integer )

    declare
    	p_tab_id		alias for $1;
    	v_tab_fqname	text;
    	v_tab_oid		oid;
    begin
    	-- ----
    	-- Grab the central configuration lock
    	-- ----
    	lock table sl_config_lock;
    
    	-- ----
    	-- Construct the tables fully qualified name and get its oid
    	-- ----
    	select slon_quote_brute(PGN.nspname) || '.' ||
    				slon_quote_brute(PGC.relname),
    				PGC.oid into v_tab_fqname, v_tab_oid
    			from sl_table T,
    				"pg_catalog".pg_class PGC,
    				"pg_catalog".pg_namespace PGN
    			where T.tab_id = p_tab_id
    				and T.tab_reloid = PGC.oid
    				and PGC.relnamespace = PGN.oid;
    	if not found then
    		raise exception 'Slony-I: tableDropKey(): table with ID % not found', p_tab_id;
    	end if;
    
    	-- ----
    	-- Drop the special serial ID column if the table has it
    	-- ----
    	if exists (select true from "pg_catalog".pg_attribute
    			where attrelid = v_tab_oid
    				and attname = '_Slony-I_schemadoc_rowID')
    	then
    		execute 'lock table ' || v_tab_fqname ||
    				' in access exclusive mode';
    		execute 'alter table ' || v_tab_fqname ||
    				' drop column "_Slony-I_schemadoc_rowID"';
    	end if;
    
    	return p_tab_id;
    end;